Oil-rice rotation method

Abstract

The invention relates to an oil-rice rotation method. The method comprises the steps that a compartment ditch is dug in a field surface, a compartment surface and compartment ditches distributed in the two sides of the compartment surface are formed, then oilseed rape is planted on the compartment surface, and field management is conducted; the oilseed rape is harvested, first fertilizer is spreadon the compartment surface on the harvesting day, then oilseed rape straw is collected and smashed, then rice is sown on the day without rotary tillage, the straw is returned to the field, a first fertilizer layer, a first seed layer and a first straw layer which are sequentially distributed from bottom to top are formed on the compartment surface, the rice is harvested, second fertilizer is spread on the compartment surface on the harvesting day, then rice straw is collected and smashed, then the oilseed rape is sown on the day without rotary tillage, the straw is returned to the field, anda second fertilizer layer, a second seed layer and a second straw layer which are sequentially distributed from bottom to top are formed on the compartment surface; and rice harvesting, oilseed rape planting, oilseed rape harvesting and rice planting are repeated to achieve oil-rice rotation. Accordingly, efficient oil-rice rotation can be achieved, and the straw and land resources are utilized tothe maximum extent.

Description

technical field [0001] The invention relates to a crop rotation method for oily rice, which belongs to the technical field of rice cultivation. Background technique [0002] According to statistics, the total national grain output in 2018 was 657.89 million tons, estimated based on the grain-to-stalk ratio of 1:1.2, plus other crop stalks, the country’s annual production of stalks exceeds 800 million tons, which contain a large amount of organic matter, nitrogen and phosphorus Potassium and trace elements, the nutrient content of nitrogen, phosphorus and potassium in 720 million tons of stems is equivalent to 6.4 million tons of urea, 9.3 million tons of superphosphate, and 9.3 million tons of potassium sulfate. [0003] Experiments have proved that returning crop stalks to the field by pressing or covering them is an effective measure to increase yield by more than 10%. However, crop stalk resources in our country become the bottleneck of the next season's farming operation...

AI Technical Summary

Problems solved by technology

[0010] Aiming at the deficiencies of the prior art, the present invention provides a method for oily rice rotation, which solves the three major resource waste problems of water soaking the land after harvesting the previous crop, mechanical plowing, and straw burning, and it is difficult to sow the next crop on the same day, and it is difficult to sow the next crop on the same day. Covering, sowing and application of herbicides after emergence

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